| 一种新型Fe-Mn-Al-Cr奥氏体不锈钢的耐蚀性能 |
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| 引用本文： | 刘卫丽,陈才金.一种新型Fe-Mn-Al-Cr奥氏体不锈钢的耐蚀性能[J].中国腐蚀与防护学报,1999,19(3):161-166. |
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| 作者姓名： | 刘卫丽 陈才金 |
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| 作者单位： | 浙江大学材料系 |
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| 摘 要： | 研究了一系列铬含量不同而锰含量都为15%的Fe-Mn-Al-Cr钢在几种典型酸、碱、盐水溶液中的耐腐蚀性能，并与锰含量为26%的Fe-Mn-Al-Cr钢和1Cr18Ni9Ti相比较，结果表明新型的Fe-Mn-Al-Cr钢在水溶液中的耐腐蚀性能比原来的Fe-Mn-Al-Cr钢的都要好，在有些溶液中的耐蚀性能比1Cr18Ni9Ti还要好。这种新型不锈钢的价格非常低，有较高的实用价值。研究还表明，对该钢种而言，铬含量升高并不意味着耐蚀性能提高，铬含量增至某一值时钢的耐蚀性能反而降低，此时组织中出现铁素体。用XPS对Fe-Mn-Al-Cr钢在0.5mol/L H2SO4中的钝化膜进行了研究.
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| 关 键 词： | Fe-Mn-Al-Cr钢 不锈钢 耐蚀性 水溶液 |
| 收稿时间： | 1998-08-03 |
INVESTIGATION OF ELECTROCHEMICAL CORROSION BEHAVIOR OF A NEW TYPE OF Fe-Mn-Al-Cr STAINLESS STEELS |
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| Weili Liu.INVESTIGATION OF ELECTROCHEMICAL CORROSION BEHAVIOR OF A NEW TYPE OF Fe-Mn-Al-Cr STAINLESS STEELS[J].Journal of Chinese Society For Corrosion and Protection,1999,19(3):161-166. |
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| Authors: | Weili Liu |
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| Abstract: | A series of new type Fe-Mn-Al-Cr stainless steels,which were cheaper than the steel containing 26% Mn, were designed.Their anodic polarization curves in 0.5mol/L H2SO4, 1mol/L HNO3,1mol/L Na2SO4 and 2mol/L NaOH showed that these new materials had better corrosion resistance than the former 26% Mn steel.The increase in chromium content did not monotonously improve their corrosion resistance.When the chromium content reached to a certain value ferrite appeared and the passivity of alloy decreased.XPS was applied to study the study the structure of passive film formed in 0.5mol/L H2SO4 .From the tests we wold conclude that the outer layer of the film was mainly composed of metal oxides and hydrates and its inner layer was metal oxides.Cr18Ni9Ti |
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| Keywords: | Fe-Mn-Al-Cr steel stainless steel corrosion resistance aqueous solution |
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